I am an English Editor for a journal and came across the following sentence in a paper I was editing:
...the increase amount will be doubled at every check point.
The context is Cloud-Based Virtual Content Delivery Networks and so the word 'check point' is not a physical entity. My question is should it be 'check point', 'checkpoint' or 'check-point'?
I cannot find many uses of the word 'check-point' and do not know the rule or reason as to why it would be hyphenated.
Can anyone help me with this matter?